Oki MC561 User Manual

44473001TH Rev.1
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Oki Data CONFIDENTIAL
7. TROUBLESHOOTING PROCEDURES
7.5.5 (5) Print quality problems appear periodically (see Fig. 7-2 E).
(5-1) Print quality problems appear vertically and periodically.
Check item Check operation
Actions for NG
results
(5-1-1) Cycle
Image drum Check if the cycle is 94.3 mm. Replace any
applicable ID
unit.
Developing roller Check if the cycle is 30.2 mm. Replace any
applicable ID
unit.
Toner supply roller Check if the cycle is 43.1 mm. Replace any
applicable ID
unit.
Charging roller Check if the cycle is 29.9 mm. Replace any
applicable ID
unit..
Roller above the
fuser
Check if the cycle is 85.4 mm. Replace any
applicable fuser
unit.
Fuser belt Check if the cycle is 94.2 mm. Replace any
applicable fuser
unit.
Transfer roller Check if the cycle is 37.7 mm. Replace the belt
unit.
When using any
new consumable
as a try, select
FUSE KEEP
MODE of
the system
maintenance
menu.
7.5.5 (6) Color misregistration is significant.
(6-1) The message “Adjusting color” displayed at power on stays for a short time.
Check item Check operation
Actions for NG
results
(6-1-1) Color registration adjustment result
Time of color
registration
adjustment (if it is
normal, correction
takes about 40
seconds)
Execute REG ADJUST TEST in the self-
diagnostic mode and check the result.
Even if an error has occurred, it is not displayed
when ON LINE is displayed.
Replace the
sensor if the
result shows
NG. Clean
the sensor.
Replace
the shutter.
Replace the
CU/PU board.
(6-1-2) Toner
Remaining toner
amount
Check the operator panel if it displays “Prepare
to replace the toner cartridge” or “Replace the
toner cartridge.”
Replace an
applicable toner
cartridge with a
new one.
(6-1-3) Color registration sensor
Dirty sensor Check the sensor if it is dirty with toner or paper
dust.
Wipe them off.
(6-1-4) Color registration sensor shutter
Malfunction of the
shutter
Check shutter operation in the self-diagnostic
mode.
Replace the
shutter or repair
the mechanism.
(6-2) Although the REG ADJUST TEST result of the engine maintenance function is OK,
color misregistration occurs.
Check item Check operation
Actions for NG
results
(6-2-1) Feeding system
Paper feed state in
the paper feed path
Check the paper feed path if there is something
that blocks the paper in the paper feed path.
Remove the
blocking object.

Oki MC561 Specifications

Printing Specifications

Print Speed	Up to 27 ppm color, 31 ppm black & white
Time to First Page	As fast as 8 seconds in color, 7.5 seconds in black & white
Print Resolution	Up to 1200 x 600 dpi

Copying Specifications

Copy Speed	Up to 27 cpm color, 31 cpm black & white
First Copy Out	As fast as 14 seconds in color, 12 seconds in black & white
Copy Resolution	Up to 600 x 600 dpi

Scanning Specifications

Scan Type	Color and black & white flatbed
Scan Resolution	Up to 1200 x 1200 dpi
Scan Speed	Approx. 3 sec./page color, approx 2 sec./page black & white at 300 dpi

Fax Specifications

Fax Modem	33.6 Kbps Super G3
Transmission Speed	3 seconds/page
Fax Resolution	Up to 200 x 400 dpi

System Memory

Standard Imaging RAM	256 MB
Max Imaging RAM	768 MB
SD Card Storage	4 GB standard; 16 GB optional

Paper Handling

Scanner RADF Capacity	Up to 50 letter/legal sheets
Standard Input	350 sheets (250 sheets via Main Tray + 100 sheets via MPT)
Maximum Input	880 sheets (with optional 530-sheet 2nd Paper Tray)

Environmental Specifications

Size	16.8" x 20" x 17.5" (42.7 cm x 50.9 cm x 44.4 cm)
Weight	63 lb. (29 kg)
Power Consumption	Operating Normal 570W; Max 1170W; Idle 100W; Power Save 20W; Deep Sleep <1.5W